If you'd like to point a domain address that you have to another domain name or subdomain, one of the ways to do that would be to use a CNAME record. By setting up such a record, the domain name being redirected loses all its records (A, MX, and so forth) and instead, it takes the A record of the domain it is redirected to. In this way, if you are using a web design service by some company that gives you a subdomain, you can use an actual domain and not only will it be redirected to the site that you have set up, but it will also be displayed in the Internet browser address bar at all times. Other possible uses of a CNAME record are to forward all of the visitors from various subdomains to their main domain, or to use the webmail service of your hosting company by using webmail.your-doman.com, for instance. The latter will work only by creating a CNAME record for a subdomain since this type of a record set up for the main domain renders it impossible to use email addresses.